801645349 has 2 divisors, whose sum is σ = 801645350. Its totient is φ = 801645348.

The previous prime is 801645329. The next prime is 801645409. The reversal of 801645349 is 943546108.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 422097025 + 379548324 = 20545^2 + 19482^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-801645349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (801645329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400822674 + 400822675.

It is an arithmetic number, because the mean of its divisors is an integer number (400822675).

Almost surely, 2^801645349 is an apocalyptic number.

It is an amenable number.

801645349 is a deficient number, since it is larger than the sum of its proper divisors (1).

801645349 is an equidigital number, since it uses as much as digits as its factorization.

801645349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 801645349 is about 28313.3422435431. The cubic root of 801645349 is about 928.9537503775.

The spelling of 801645349 in words is "eight hundred one million, six hundred forty-five thousand, three hundred forty-nine".